thyroid-stimulating hormone stimulation test

n.
  1. A test that measures the uptake of I131 in the thyroid gland before and after the administration of thyroid-stimulating hormone, used to distinguish primary hyperthyroidism from secondary or tertiary hyperthyroidism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.